Topaz and Gedrite Physical Properties

Topaz

Gedrite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

3.49-3.57

Subconchoidal, Uneven, Conchoidal

[001] Perfect

Al₂SiO₄(F,OH)₂

3.15-3.259

Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.

5.5-6

(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Topaz and Gedrite Chemical Formula

While comparing Topaz and Gedrite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Topaz and Gedrite chemical formula.

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Topaz and Gedrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Gedrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz Vs Gedrite during the identification of gemstone. Specific gravity of Topaz is whereas that of Gedrite is .